Second arrest made in UNH student Lizzi Marriott's death

A second arrest has been made in the disappearance and death of a University of New Hampshire student.

Michael A. Delaney, New Hampshire attorney general, Dover Police Chief Anthony F. Colarusso Jr., and Col. Robert C. Quinn of the New Hampshire State Police made the announcement on Monday.

The officials said that Kathryn McDonough, 19, of Portsmouth, was arrested Monday and charged with two felony counts in connection with the disappearance and death of Elizabeth "Lizzi" Marriott, 19, whose body has not been found.

McDonough is charged with hindering apprehension or prosecution and conspiracy to commit hindering apprehension or prosecution.

Seth Mazzaglia, 30, of Dover, has been charged with second-degree murder in connection with the case. Marriott was last seen at Mazzaglia's apartment in early October.

On Monday, authorities said at the time of Marriott's disappearance, McDonough and Mazzaglia were in a relationship.

According to New Hampshire Assistant Attorney General Peter Hinckley, McDonough lied when first questioned about Lizzi's disappearance.

"While she was interviewed by police officers around October 12th regarding Ms. Marriott's disappearance, she gave a false alibi regarding her and Mr. Mazzaglia's whereabouts on the night of the disappearance, as well as a false alibi regarding their interaction with Ms. Marriott at that time," Hinckley said.

Responding to these new developments in the case, Lizzi Marriott's father, Bob Marriott, of Westborough, Massachusetts, told WCVB that this arrest was "another step forward in the investigation."

The family pastor, John Taylor of the First United Methodist Church of Westborough, echoed those comments Monday night.

"Amen for justice and truth, and I think that can bring something, to know the truth -- but it obviously wouldn't bring Lizzi back," Taylor said.

McDonough is scheduled to be arraigned via video link on Wednesday in Derry District Court.

Investigators said the arraignment is taking place at that location because it is one of the few that is open this holiday week.

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